Efficient Document Analytics on Compressed Data: Method, Challenges, Algorithms, Insights
Efficient Document Analytics on Compressed Data: Method, Challenges, Algorithms, Insights
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压缩数据的高效文档分析:方法、挑战、算法、见解
DOI:
10.14778/3236187.3236203
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发表时间:
2018-07
影响因子:
2.5
通讯作者:
Chen Wenguang
中科院分区:
文献类型:
--
作者:
Zhang Feng;Zhai Jidong;Shen Xipeng;Mutlu Onur;Chen Wenguang
Today's rapidly growing document volumes pose pressing challenges to modern document analytics, in both space usage and processing time. In this work, we propose the concept of compression-based direct processing to alleviate issues in both dimensions. The main idea is to enable direct document analytics on compressed data. We present how the concept can be materialized on Sequitur, a compression algorithm that produces hierarchical grammar-like representations. We discuss the major challenges in applying the idea to various document analytics tasks, and reveal a set of guidelines and also assistant software modules for developers to effectively apply compression-based direct processing. Experiments show that our proposed techniques save 90.8% storage space and 77.5% memory usage, while speeding up data processing significantly, i.e., by 1.6X on sequential systems, and 2.2X on distributed clusters, on average.
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